Description Usage Format Note Source Examples

Flood Estimation Handbook flood peak data CD-ROM.

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Data.frames:

`am`

is the data.frame of the annual maximum flows with 3 columns:
`number`

, the code of the station;
`date`

, date of the annual maximum;
`year`

, year of the annual maximum (we consider hydrologic year: 1 october - 30 september);
`am`

, the value of the annual maximum flow [m3/s].

`cd`

is the data.frame of parameters of 1000 catchements with 24 columns:
`number`

, the code of the station;
`nominal_area`

, catchment drainage area [km2];
`nominal_ngr_x`

, basin outflow coordinates [m];
`nominal_ngr_y`

, basin outflow coordinates [m];
`ihdtm_ngr_x`

, basin outflow coordinates by Institute of Hydrology digital terrain model [m];
`ihdtm_ngr_y`

, basin outflow coordinates by Institute of Hydrology digital terrain model [m];
`dtm_area`

, catchment drainage area [km2] derived by CEH using their DTM (IHDTM);
`saar4170`

, standard average annual rainfall 1941-1970 [mm];
`bfihost`

, baseflow index derived from HOST soils data;
`sprhost`

, standard percentage runoff derived from HOST soils data;
`farl`

, index of flood attenuation due to reservoirs and lakes;
`saar`

, standard average annual rainfall 1961-1990 [mm];
`rmed_1d`

, median annual maximum 1-day rainfall [mm];
`rmed_2d`

, median annual maximum 2-days rainfall [mm];
`rmed_1h`

, median annual maximum 1-hour rainfall [mm];
`smdbar`

, mean SMD (soil moisture deficit) for the period 1961-1990 calculated from MORECS month-end values [mm];
`propwet`

, proportion of time when soil moisture deficit <=6 mm during 1961-90, defined using MORECS;
`ldp`

, longest drainage path [km], defined by recording the greatest distance from a catchment node to the defined outlet;
`dplbar`

, mean drainage path length [km];
`altbar`

, mean catchment altitude [m];
`dpsbar`

, mean catchement slope [m/km];
`aspbar`

, index representing the dominant aspect of catchment slopes (its values increase clockwise from zero to 360, starting from the north). Mean direction of all inter-nodal slopes with north being zero;
`aspvar`

, index describing the invariability in aspect of catchment slopes. Values close to one when all slopes face a similar direction;
`urbext1990`

, extent of urban and suburban land cover in 1990 [fraction].

For information on the package and the Author, and for all the references, see `nsRFA`

.

http://www.environment-agency.gov.uk/hiflowsuk/

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